Intake manifold



F. LUNDGREN INTAKE MANIFOLD ga 'kmr @69m Filed Jan. 28, 1920 seien-ee oe, aai-fleas. j

safer nano Lonnenair, or nos meenam, cameo sonne, or Naan, i

s' a einen on oem-nena 'ro sans een.

HTKE MAWEGLB.

appneeum mee sammy as, ieee. semi ne aseese.

- To aZ whom' it may consom:

n, ,My invention relates to interpreti cdmbus- Be it known that l, Fimo LUNDGREN a citizen @fue United seres/residing et im Angeles, in the county of Los Angeles and State of California, have invented a ew and useful improvement Comprising tbelntake Manifolds, of Whiebyi-he following is a' specification.

. illustrative purposes only,

Fig. l isa side eleva-tion of an automobile engine equipped with luy-invention.

Fig. 2 is a view of the intake manifold .on a somewhat enlarged scale, a portion thereof being broken awayto better illustrate the inventiom Fig. 3 "s a cross section on 'a plane represented by the line 3 3 ot Fig. 2.

In the form ofi my invention illustrated in these drawings, 11 is an automobile engine having a standard exhaust manifold 12 and having intake openings to which my intake ymanifold 14, is secured by means of clamps 15. The intake man1- fold 111 consists of .two hollow arms 2O having openings 21 connecting4 with the intake opening-s of the engine, Ithese arms 2() connecting with a heating chamber 22, which in turn connects throughathird hollonr arm 28 with-the carburetor t2li o the engine. Formed on the front of the manifold is a hot ,qa-s chamber 30, this chamber being,r provided with a lid 31 secured in place by a stud and thumb nut 32 or by any other convenient means. I Formed on the top of the hot air chamber 30 is a projection 40 having a central-opening 41 which connects with the chamber 30.A Turning in this openiup.r 41 is a sleeve valve 42 which may be turned by means of a slot 4S in the top thereof to entirely' or partially open or closean opening 44 which connects by means of a pipe 45 with the interior of the exhaust manifold 12. Asmall screw 50 is provided for looking the valve eil in place in an position.' Extending through the heatin c amber 22- and opening into the hot air c ramber-G in' bnt ofthe manifold are a series oi copper tubes which are provided with internal projections 61 to' increase their heating ce.-

pacity thesetubes connect at the back with a discharge chamber 62 whichl is presided i with exhaust pipe 63, this exhaust pipe extendinvdown tovany convenient int. Located 1n the bottoni of the hot air chamber 42 is a Wick of. asbestos 70. ,n I

The 'method of operation of myA invention is as followsz The -explosive mixture 'from the carbureter 24 1s drawn up through the aria 2S into the heating chamber 22 end through the arms 20 and the openings .2l-into tneinterior of the engine. When it is desired to start the engine the cover 3l is opened and a little Wood alcolici is poured on the asbestos and lighted. This wood alcohol tends to heat the front wall ofthe heatin chamber 22, so that when the engine is started thiswall heats the explosive mixture delivered by the carburetor 24 before this explosive mixture passes into the engine. After the engine is startedv the, exhaust gases from the exhaust manifold 12 are forced outward.-V ly from the pipe 45 passing by the valve 42 into the opening 41 and into the hotair chamber 30. Thess hot gases then pass throu h thev tubes Ginto the 'chamber 62 and dwnwardly through the tube 63 being. vented into the air at any convenient point. In the passage through the tubes 60, which are made -of copper or brass, the hot gases HIJ..

give up a considerable portion of their heat '95 to the tube, .this heat beine` conducted through the tube and delivered to the enplosive mixtureA inthe ,chamber 22. The tubes 60 are arran ed .in stag ered relationship, as shown in 1g.2,so t 'at the streak loo of explosive mixture which rushes upwardly through the arm 23 strikes against these tubes and is deflected sidewise striking against the tube above andbeinp; again deiectedso that all portions of the explosive l0 mixture are thrownviolently in contact with the exterior of the tube 30. The'valve 42 can be turned to regulate the amount of exhaust gases passing through the pipes,-

thus 'regulating the amount of heat den im livere the tube and hence the amount of heet -flelivered from the tube to the exploiife mixure l claim as my invention i- .m an make manifold of the class cle- 'sciibed, the ycombinatioifi of: a pair of liol low' fielivery arms; a substantially vertical 'liolow ieg Conneming with said mms and inegiallj; formed therewith integrally oxmed `walls; projecting' outwfix'lly from the gmini of joindei of said leg with said arms to 4provide a recess; a front 'allaexliending across the lower portion-o 'said outwardly pirogectmg walls to form a torch pocket; a 

